12 SCADA Communications
P50 Agile P153
9-4
P153/EN M/B
2
SCADA COMMUNICATIONS
2.1
Modbus
This section describes how the MODBUS standard is applied to the Px50 platform. It is not a
description of the standard itself. The level at which this section is written assumes that the reader is
already familiar with the MODBUS standard.
The MODBUS protocol is a master/slave protocol, defined and administered by the MODBUS
Organization. For further information on MODBUS and the protocol specifications please see the
Modbus web site (www.modbus.org).
2.1.1
Overview
2.1.1.1
Physical Connection and Link Layer
Only one option is available for connecting MODBUS.
•
Rear serial port 1 - for permanent SCADA connection via EIA(RS)485
The MODBUS interface uses ‘RTU’ mode communication rather than ‘ASCII’ mode as this provides
more efficient use of the communication bandwidth. This mode of communication is defined by the
MODBUS standard.
The IED address and baud rate can be selected using the front panel menu or with P50 Agile
configurator.
When using a serial interface, the data format is: 1 start bit, 8 data bits, 1 stop bit (a total of 10 bits per
character).
2.1.2
MODBUS Functions
2.1.2.1
Protocol Mapping
The following MODBUS function codes are supported:
Code
Function Name
Addresses starts with
02
Read Input Status
1x addresses
03
Read Holding Registers
4x addresses
04
Read Input Registers
3x addresses
05
Force Single Coil
0x addresses
16
Preset Multiple Registers
4x addresses
•
Exception Codes generated in case of an error:
Code
MODBUS Response Name
Product interpretation
01
Illegal Function Code
The function code received in query is not supported by the IED.
02
Illegal Data Address
The start address received in the query is not an allowable value.
Note:
If the start address received is correct but
the range includes unsupported address,
then this error is produced.
Summary of Contents for Agile P50 Series
Page 3: ...P50 Agile P153 1 Introduction P153 EN M B 1 1 INTRODUCTION CHAPTER 1...
Page 4: ...1 Introduction P50 Agile P153 1 2 P153 EN M B...
Page 10: ...1 Introduction P50 Agile P153 1 8 P153 EN M B...
Page 11: ...P50 Agile P153 2 Safety Information P153 EN M A 2 1 SAFETY INFORMATION CHAPTER 2...
Page 22: ...Chapter 2 Safety Information P50 Agile P153 2 12 P153 EN M A...
Page 23: ...P50 Agile P153 3 Hardware Design P153 EN M B 3 1 HARDWARE DESIGN CHAPTER 3...
Page 24: ...3 Hardware Design P50 Agile P153 3 2 P153 EN M B...
Page 32: ...3 Hardware Design P50 Agile P153 3 10 P153 EN M B...
Page 33: ...P50 Agile P153 4 Front Panel P153 EN M B 4 1 FRONT PANEL CHAPTER 4...
Page 34: ...4 Front Panel P50 Agile P153 4 2 P153 EN M B...
Page 39: ...P50 Agile P153 5 Configuration P153 EN M B 5 1 CONFIGURATION CHAPTER 5...
Page 40: ...P50 Agile P153 5 Configuration P153 EN M B 5 2...
Page 150: ...P50 Agile P153 5 Configuration P153 EN M B 5 112...
Page 151: ...P50 Agile P153 6 Protection Functions P153 EN M B 6 1 PROTECTION FUNCTIONS CHAPTER 6...
Page 152: ...6 Protection Functions P50 Agile P153 6 2 P153 EN M B...
Page 168: ...7 Protection Parameter Settings P50 Agile P153 7 2 P153 EN M B...
Page 189: ...P50 Agile P153 8 Monitoring Control P153 EN M B 8 1 MONITORING CONTROL CHAPTER 8...
Page 190: ...8 Monitoring Control P50 Agile P153 8 2 P153 EN M B...
Page 207: ...P50 Agile P153 9 SCADA Communications P153 EN M B 9 1 SCADA COMMUNICATIONS CHAPTER 9...
Page 208: ...12 SCADA Communications P50 Agile P153 9 2 P153 EN M B...
Page 220: ...12 SCADA Communications P50 Agile P153 9 14 P153 EN M B...
Page 221: ...P50 Agile P153 10 Installation P153 EN M B 10 1 INSTALLATION CHAPTER 10...
Page 222: ...10 Installation P50 Agile P153 10 2 P153 EN M B...
Page 234: ...13 Commissioning Instructions P50 Agile P153 13 2 P153 EN M B...
Page 242: ...12 Maintenance and Troubleshooting P50 Agile P153 12 2 P153 EN M B...
Page 250: ...12 Maintenance and Troubleshooting P50 Agile P153 12 10 P153 EN M B...
Page 252: ...13 Technical Specifications P50 Agile P153 13 2 P153 EN M B...
Page 263: ...P50 Agile P153 14 Wiring Diagrams P153 EN M B 14 1 WIRING DIAGRAMS CHAPTER 14...
Page 264: ...14 Wiring Diagrams P50 Agile P153 14 2 P153 EN M B...
Page 267: ......